Oil burner for limekilns and the like



May 29. 1928.

F. FIRPO ET AL OIL BURNER FOR LIME KILNS AND THE LIKE Filed April 10, 1928 v gwoemtom E2720 Feden'co Jose An/om'o Bec'erra Patented May 29, 1928.

" ITE W IS" 1,671,234 PATENT oF.F1CE

rnnnnrco rniro AND JOSE ANroNro BECERRA, or CORDOBA, ARGENTINA.

' OIL BURNER FOR LIMEKIIJ NS AN D THE LIKE.

Application filed April 10, 1928, Serial No. 268,977, and in Argentina December 24, 1927.

The present invention relates to oil burners; and it has for its main object to provide an improved burner of the type indicated which is designed primarily for heating lime- 5 kilns and which is so constructed as to be efficient in its operation, and, at the same time, as not: to affect the quality of the final product nor to damage the kiln structure through excess of heat.

In the accompanying drawing:

Figure l is a plan view of the improved burner;

Fig. 2 is a view of the front or nozzle end thereof;

Fig. 3 is a rear end view;

Fig. 4 is a longitudinal vertical section;

Fig. 5 is a vertical cross-section on line 55, Fig. 4; and

Fig. 6 is a fragmental vertical section'of a lime kiln equipped with the improved burner.

Referring more particularly to Figs. 15, the burner, generally designated 6, is shown as consisting of a casing 7, the main portion or body of which is divided by a horizontal partition 8 to form upper-and lower chambers 9 and 10 to receive petroleum or other fuel oil and steam, respectively, as hereinafter explained. Nozzles 11 and 12 are mounted in the front ends of these chambers,

one below the other; the oil nozzle 11 having a hexagonal central portion or body anda conical mouth, while the steam nozzle 12 is relatively flat and has an outward taper or flare for spraying purposes. Both nozzles may be made adjustable, if desired.

The rear portion of the casing is constructed from an enlarged head 13, the outer or rear wall of which is provided with removable threaded plugs 14 and 15 to permit access to the chambers 9 and 10 for cleaning or other purposes; the plug openings alining with said chambers, as will be understood.

The partition 8 is provided at its rear end,

within head 13, with reversely-curved arms 16 and 17, so that at this point the partition has an S-shaped form, which is clearly shown in Fig. 5. The entire head is thus divided internally by the S-shaped partition 16, 8, 17 into two compartments 18 and 19, the former of which opens at its lower portion into the steam chamber 10, while the other compartment opens at its top into the oil chamber 9.

Inlets 20 and 21 are provided at the top and bottom of the head for steam and oil, respectively, and can take the form of threaded nipples for connection to the steam and oil pipes (not shown); and a suitable filter 22 (Figs. 4 and 5) can be fittedin the oil inlet 21,.if desired.

The arrangement above described provides for an ample superheating surface in order that the fuel may issue in liquid state and, owing to the pressure imparted to it in its main reservoir, the fuel is projected from the nozzle 11 a distance of about centimeters from the point thereof into the furnace 23 of the kiln 2 L (see Fig. 6) where it meets steam issuing at a pressure of about pounds from the nozzle 12 which distributes the oil over the material in the furnace, thus effecting the combustion of the lime and avoiding damage of the kiln structure.

The nozzles may be disposed in accordance with the productive capacity of the kiln, that is to say, an ordinary burner may be provided with a fuel nozzle and a steam nozzle as shown in the drawing, but this same arrangement may also be duplicated or triplicated in accordance with the requirements of the plant, and the size of the oil and steam outlets may also be varied as desired in each case.

The improved oil burner is constructed by casting it from brass in one piece, the walls being from 4 to 6 millimeters thick throughout. The nozzles 11 and 12 and the two .plugs 14 and 15 provided at its head end for cleaning purposes, as well as the filter 22, are also of brass. The nozzles are disposed in accordance with the furnace and capacity of the lime-kiln; the burner may be provided with one, two, or more steam and oil nozzles,

the outlets thereof varying from 1 to 3 millimeters in width.

Having thus fully described and ascer tained the nature of our said invention, what f fuel supply means opening into one comlongitudinal and S-shaped partitions are.

partment; steam supply means opening into formed conjointly by a single, one-piece the other compartment; and fuel and steam metal casting. 10

discharge nozzles attached to the front ends In testimony whereof We aflix our signa- 5 of the respective chambers. l v tures. p p

2. An oil burner, according to claim 1, in FEDERICO FIRPO- whichthe burner body, its head and the t JOSE ANTONIO BECERRA. 

